Brytenwalda

Welcome to Brytenwalda, a ruleset which will allow you to recreate battles and raids during the so called British “Age of Arthur” and Saxon invasion. In Brytenwalda you'll impersonate a Chieftain during the Dark Ages, commanding his
men in the defence of their homelands or looting and burning those belonging to your enemies.
– Brytenwalda introduction

You'll be able to use models of any size, although it is recommended that you play at a scale between 15 and 33mm. Of course, you can use bigger miniatures if you can manage a really large table!
– Brytenwalda page 8

Basing

In Brytenwalda, each model represents a single
person, and should be based individually… Depending on the manufacturer and the players' preferences, miniatures can be based on round or square bases. It does not matter how your
miniatures are based when playing Brytenwalda, but it's recommended to base them all in the same way.
– Brytenwalda page 8